Letter

Polymorphic Forms of Chocolate: Application of Solid-State Characterization in the Food Industry
Renan M.B. Dezena
Preformulation Specialist in the Pharmaceutical Industry, SP, Brazil
“The perception of chocolate palate is directly related to the crystallographic structure, particle size range, geometry and spatial arrangement.”

Webinar

7th Webinar: Restricted Access Materials in Biological Sample Preparation for the Determination of Metals and Organic Molecules

May 26 / 14:00 (Brasilia time)
Speaker: Prof.Dr. Eduardo Figueiredo - Read more

Webinar

6th Webinar: Analytical Chemistry Driven Personalised Medicine

April 30 / 14:00 (Brasilia time)
Speaker: Prof. Dr. Jose L. Capelo - Read more

Webinar

5th Webinar: Re-Imagining Standard Additions and InternalStandardization for More Efficient Calibration Methods

March 5 / 15:00 (Brasilia time)
Speaker: Prof. Dr. George L. Donati - Read more

Webinar

4th Webinar: Portable Analytical Tools for Bioanalytical and Forensic Applications

November 26 / 14:00 (Brasilia time)
Speaker: Prof. Wendell K. T. Coltro - Read more

Webinar

3rd Webinar: Analytical Strategies for Environmental and Ecotoxicological Studies

October 30 / 14:00 (Brasilia time)
Speaker: Prof. Dr. Marco T. Grassi - Read more

Webinar

2nd Webinar: Analysis of Clinical Biomarkers by ICP-MS: From Speciation to Single-Cell Approaches

Recorded: 25 September 2020
Speaker: Prof. Dr. Maria Montes - Read more

Webinar

1st Webinar: Development and Application of Methods for the Determination of Residues and Contaminants in Food and Environmental Samples

Recorded: 6 August 2020
Speaker: Prof. Dr. Renato Zanella - Read more

Review: Chemometric Approaches in Questioned Documents

Roberta Petry Gorziza, Marina González, Carina Maria Bello de Carvalho, Rafael Scorsatto Ortiz, Marco Flores Ferrão, Renata Pereira Limberger

Article: Fingermark Analysis by Fourier Transform Infrared Microscopy Using Chemometric Tools

Marina González, Kristiane de Cássia Mariotti, Adriano de Araújo Gomes, Marco Flôres Ferrão, Renata Pereira Limberger

Article: Hair mineralogram analysis for health assessment: Statistical bias from gender and aesthetic treatments

Gabrielly Peregrino, Carlos G. Massone, Adriana H. Nudi, Tatiana Dillenburg Saint’Pierre

Article: Soft Modelling of the Photolytic Degradation of Moxifloxacin Combining SERS Spectroscopy and Multivariate Curve Resolution

Mónica Benicia Mamián-López, Ronei J. Poppi

Article: Emerging Contaminants in Aqueous Matrices Determined by Gas Chromatography-Mass Spectrometry

Emerson Luis Yoshio Hara, Barbara G. S. Soares, Adriano L. P. Paiva, Bruno José Gonçalves dos Santos, Gilberto Abate, Kelly Cavalcanti Machado, Beatriz Isabella Cestaro, Rafael Garrett Dolatto, Marco Tadeu Grassi

Article: Correlating Comprehensive Two-dimensional Gas Chromatography Volatile Profiles of Chocolate with Sensory Analysis

Luciana Fontes de Oliveira, Soraia Cristina Gonzaga Neves Braga, Fabio Augusto, Ronei Jesus Poppi

Article: Monitoring Mineral-Associated Organic Matter in Tropical Pastures using Near Infrared Spectroscopy

Felipe Bachion de Santana, André Marcelo de Souza, Fabiano de Carvalho Balieiro, Mirelly Mioranza, Renato Aragão Ribeiro Rodrigues, Ronei Jesus Poppi

Article: Chromatographic Analysis of Byproducts from a Non-Toxic Ammunition and a Marked Ammunition: An Assessment of Toxicity

Aline Marcelino Arouca, Maurício Leite Vieira, Márcio Talhavini, Ingrid Távora Weber

Article: Digital Images and Multivariate Calibration in the Determination of Rheological and Quality Parameters of Wheat Flour

Leticia Darlla Cordeiro, Patrícia Valderrama

Article: Data Mining, Machine Learning, Deep Learning, Chemometrics – Definitions, common points and Trends (Spoiler Alert: VALIDATE your models!)

José Manuel Amigo

Article: Footprint of Arsenic Contamination in Sediments and Water from Mining Sites – A case study based on multivariate optimization by GF AAS

Glenda Máris Mesquita De Filippis, Bruno Elias dos Santos Costa, Simone Soares de Oliveira Borges, Waldomiro Borges Neto, Nivia Maria Melo Coelho, Luciana Melo Coelho

Article: The use of Chemometrics to Discriminate Sample Adulteration in Different Levels: the case of Peruvian Maca

Heloísa de Carvalho Rodrigues, Hellen Fernanda da Silva Paulino, Patrícia Valderrama, Paulo Henrique Março

Article: Fast High–Resolution Mass Spectrometry and Chemometrics for Evaluation of Sensory Parameters of Commercial Coffee Blends

Victor Gustavo Kelis Cardoso, Guilherme Post Sabin, Leandro Wang Hantao

Article: Raman Imaging and Chemometrics Evaluation of Natural and Synthetic Beeswaxes as Matrices for Nanostructured Lipid Carriers Development

Hery Mitsutake, Gustavo Henrique Rodrigues da Silva, Lígia Nunes de Morais Ribeiro, Eneida de Paula, Ronei J. Poppi, Douglas N. Rutledge, Márcia C. Breitkreitz

Article: Carcinogenic and Non-Carcinogenic Health Risk Assessment of Heavy Metals in Njaba River, Imo State, Nigeria

Victor Chukwuemeka Eze, Chidiebere Temple Ndife, Miracle Oluebube Muogbo

Review: Wireless Wearable Electrochemical Sensors

Thais Maria Rabelo Alves, Patricia Batista Deroco, Dagwin Wachholz Junior, Lourenço Henrique Bittar Vidotto and Lauro Tatsuo Kubota

Article: Determination of Macro, Micro and Toxic Elements using Argon-Based Plasma Spectroanalytical Methods in order to support Brazilian Regulations on Inorganic Constituents in Infant Foods

Marcelo Larsen de Lima Tozo, Fernanda Costa Pinheiro, Joaquim Araújo Nóbrega

Article: Triclosan: Electrochemistry, Spontaneous Degradation and Effects on Double-Stranded DNA

Elizaura Hyeda Carvalho Silva, Ilanna Campelo Lopes, Evellin Enny Silva Bruzaca, Paulina Andréa Viana de Carvalho, Auro Atsushi Tanaka

Technical Note: Quantitative analysis of Δ9-THC-COOH in Human Urine by the Liquid-Liquid Extraction technique and Gas Chromatography-Mass Spectrometry: Adaptation, Optimization and Validation

Kleber Ota de Oliveira, Deborah Thais Palma Scanferla, Jordana Quaglia Pereira da Silva, Mariana Aparecida Oliveira Madia, Erika Bando, Miguel Machinski Junior, Camila Marchioni, Simone Aparecida Galerani Mossini

Review: Key Information Related to Quality by Design (QbD) Applications in Analytical Methods Development

Alisson Silva Araújo, Daniel Fernandes Andrade, Diego Victor Babos, Jeyne Pricylla Castro, José Augusto Garcia, Marco Aurelio Sperança, Raimundo Rafael Gamela, Raquel Cardoso Machado, Vinícius Câmara Costa, Wesley Nascimento Guedes, Edenir Rodrigues Pereira-Filho, Fabíola Manhas Verbi Pereira

Article: Effects of UV Radiation on Paper: A Chromatic Study

Melania Jiménez-Reyes, Dolores Tenorio, Genoveva García-Rosales, Jaime Jiménez-Becerril, Gabriel Edgar Luna-Castro

Article: Synthesis, Isolation and Characterization of three acid and alkaline hydrolytic products of Nimodipine and Development of a valid RP-HPLC method for simultaneous determination of Nimodipine and Citicoline sodium in the presence of Nimodipine degradation products in Bulk and Tablets

Ayman Abo Elmaaty Mohamed

Technical Note: Multi-Element Determination of Trace Elements in B7-diesel Oil by High-Resolution Continuum Source Flame Atomic Absorption Spectrometry

Heldiane S. dos Santos, Alexandre de Jesus, Diane O. Laroque, Clarisse M. S. Piatnicki, Márcia M. da Silva

Analytical Chemistry in the Fight for Life

A test for COVID-19 that employs artificial intelligence algorithms and a test based on the analysis of specific peptides from SARS-CoV-2 proteins were developed in Brazil.

BrJAC Young Talent in Analytical Chemistry Award 2020

The winner of the 2020 award was Prof. Dr. Wendell Coltro, Associate Professor and Director of the Institute of Chemistry at the Federal University of Goiás, Brazil.

Live BrJAC Webinars – Check out the recent BrJAC initiative

In 2020, to remain connected to its readers, BrJAC held 4 live webinars. A scientific book was drawn in each webinar. A new webinar schedule will be offered by BrJAC in 2021.

Total Fat Determination in any Matrix by Simultaneous, Robust and Comprehensive Hydrolysis and Extraction Microwave Approach

An innovative total fat determination protocol was developed enabling the simultaneous hydrolysis and extraction process within a sole step.

Rapid Qualitative and Quantitative Analysis of Residual Solvents in Food Packaging by Static Headspace coupled to GC-FID/MS

A HS autosampler coupled to a single quad GC-MS system represents a robust analytical configuration for quantitative analysis of residual solvents in food packaging.

Speciation of Bromine Compounds in Ozonated Drinking Water using Ion Chromatography and Inductively Coupled Plasma Mass Spectrometry

Combining the resolving capability of IC with the detection power of ICP-MS allows fast, easy and reliable analysis of bromine species in drinking waters.

IC-ICP-MS Analyzer for Speciation Analysis

Enjoy ease of use, fast start up times and reliable, stable performance for demanding applications in environmental, food safety, and academic laboratories.

TriPlus 500 Headspace Autosampler coupled to the TRACE 1300 GC

This modular platform gives today’s routine laboratories the productivity they need to succeed – both today and in the future.

ETHOS™ X Microwave – Gain Productivity in Fat Determination on any Matrix

A more modern, greener and more efficient approach to total fat, FAME and free fat determinations in food and feed matrices.

Pittcon 2021 Conference & Expo is going Virtual!

Pittcon 2021 will be a virtual event through the platform LabRoots.

SelectScience® Pioneers online Communication and Promotes Scientific Success

SelectScience® informs through Editorial, Q&A and Application Articles, Featured Topics, Event Coverage, Video and Webinars.

CHROMacademy is the leading provider of eLearning for analytical science

For over 10 years, CHROMacademy has increased knowledge, efficiency and productivity across all applications of chromatography.

Events

Tentative agenda of events for 2021 & 2022. It is suggested to consult the event's official website for updates.

Periodicals & Websites

Get access to reliable sources of analytical chemistry information useful for researchers and for academic, R&D and industry Labs.

Notices of Books

Scientific books on Analytical Chemistry recently launched or to be launched soon are presented here.

Acknowledgments

BrJAC editors are grateful to all those who have reviewed papers in 2020 using significant time and effort to provide constructive inputs.